66 |
const unsigned int intLimit = (unsigned int) -1; // all 0xFFFF... |
const unsigned int intLimit = (unsigned int) -1; // all 0xFFFF... |
67 |
const float max = InternalDepth + ExtControlValue * ExtControlDepthCoeff; |
const float max = InternalDepth + ExtControlValue * ExtControlDepthCoeff; |
68 |
if (RANGE == range_unsigned) { |
if (RANGE == range_unsigned) { |
69 |
normalizer = max / (float) intLimit * 0.5f; |
normalizer = max / (float) intLimit; |
70 |
} else { // signed range |
} else { // signed range |
71 |
normalizer = max / (float) intLimit * 0.25f; |
normalizer = max / (float) intLimit * 4.0f; |
72 |
offset = -max; |
offset = -max; |
73 |
} |
} |
74 |
} |
} |
82 |
* @param ExtControlDepth - defines how strong the external MIDI |
* @param ExtControlDepth - defines how strong the external MIDI |
83 |
* controller has influence on the |
* controller has influence on the |
84 |
* oscillator amplitude |
* oscillator amplitude |
85 |
* @param FlipPhase - inverts the oscillator wave |
* @param FlipPhase - inverts the oscillator wave against |
86 |
|
* a horizontal axis |
87 |
* @param SampleRate - current sample rate of the engines |
* @param SampleRate - current sample rate of the engines |
88 |
* audio output signal |
* audio output signal |
89 |
*/ |
*/ |
90 |
void trigger(float Frequency, start_level_t StartLevel, uint16_t InternalDepth, uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate) { |
void trigger(float Frequency, start_level_t StartLevel, uint16_t InternalDepth, uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate) { |
91 |
this->InternalDepth = (InternalDepth / 1200.0f) * Max; |
this->InternalDepth = (InternalDepth / 1200.0f) * Max; |
92 |
this->ExtControlDepthCoeff = (((float) ExtControlDepth / 1200.0f) / 127.0f) * Max; |
this->ExtControlDepthCoeff = (((float) ExtControlDepth / 1200.0f) / 127.0f) * Max; |
93 |
|
if (RANGE == range_unsigned) { |
94 |
|
this->InternalDepth *= 2.0f; |
95 |
|
this->ExtControlDepthCoeff *= 2.0f; |
96 |
|
} |
97 |
|
|
98 |
const unsigned int intLimit = (unsigned int) -1; // all 0xFFFF... |
const unsigned int intLimit = (unsigned int) -1; // all 0xFFFF... |
99 |
const float r = Frequency / (float) SampleRate; // frequency alteration quotient |
const float r = Frequency / (float) SampleRate; // frequency alteration quotient |
100 |
c = (int) (intLimit * r); |
c = (int) (intLimit * r); |
101 |
|
|
102 |
switch (StartLevel) { |
switch (StartLevel) { |
103 |
case start_level_max: { |
case start_level_max: |
104 |
c = -c; // wave should go down |
iLevel = (FlipPhase) ? 0 : intLimit >> 1; |
|
if (RANGE == range_unsigned) |
|
|
iLevel = intLimit; |
|
|
else /* signed range */ |
|
|
iLevel = intLimit >> 1; |
|
105 |
break; |
break; |
106 |
} |
case start_level_mid: |
|
case start_level_mid: { |
|
107 |
if (FlipPhase) c = -c; // wave should go down |
if (FlipPhase) c = -c; // wave should go down |
108 |
if (RANGE == range_unsigned) |
iLevel = intLimit >> 2; |
|
iLevel = intLimit >> 1; |
|
|
else /* signed range */ |
|
|
iLevel = 0; |
|
109 |
break; |
break; |
110 |
} |
case start_level_min: |
111 |
case start_level_min: { |
iLevel = (FlipPhase) ? intLimit >> 1 : 0; |
|
if (RANGE == range_unsigned) |
|
|
iLevel = 0; |
|
|
else /* signed range */ |
|
|
iLevel = -(intLimit >> 1); |
|
112 |
break; |
break; |
|
} |
|
113 |
} |
} |
114 |
} |
} |
115 |
|
|